Float Zone Crystal Grinder Coolant Purifier
A purifying apparatus that cleans coolant fluids used in crystal grinders which shape semiconductor boules to precise diameters. It removes contaminants from the coolant, maintaining the required purity and temperature for grinding operations. This part is classified under tariff item 8421.99.00 as a part of purifying machinery for liquids in semiconductor manufacturing.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the purifier is a complete filtering or purifying machine for liquids
Complete liquid purifying machines are classified under 8421.29, while this item covers parts.
If the purifier is sold as part of a complete crystal grinding machine
Machines for processing semiconductor materials are classified under heading 84.86.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the purifier's role in coolant purification for crystal grinding to support classification under 8421.99.00
• The CBSA may ask for a diagram or manual showing how the purifier integrates with the grinder
• Consider whether the purifier is a complete machine or a part, as this affects the tariff classification
Related Products under Tariff item 8421.99.00
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Centrifugal Dryer Housing Assembly
> The outer housing and structural assembly for industrial centrifugal dryers used in semiconductor wafer processing to remove liquids from wafers after rinsing. As a dedicated part of centrifugal dryers, it is classified under this tariff item for parts of centrifuges.
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